Qtech QSW-8200-28T-AC-DC [5/47] Chapter 1 commands for layer 3 forwarding

User Manual

Chapter 1. Commands for Layer 3 Forwarding 5

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Chapter 1 COMMANDS FOR LAYER 3 FORWARDING

1.1 Commands for Layer 3 Interface

1.1.1 bandwidth

 Command: bandwidth <bandwidth>

 no bandwidth

 Function: Configure the bandwidth for Interface vlan. The “no bandwidth” command

recovery the default value. The bandwidth of interface vlan is used to protocol account

but not control the bandwidth of port. For instance, it is use the interface bandwidth（

cost=10^8/bandwidth）when OSPF account the link cost, so change the bandwidth can

result in OSPF link cost changed.

 Parameters: <bandwidth> is the bandwidth for interface vlan. Range from 1bits to

10000000000 bits. It is can use unit “k, m, g”. There are no decimal numbers after

conversion.

 Command mode: VLAN Interface Mode

 Default: The default bandwidth for interface VLAN is 100,000,000bit.

 Usage Guide: This command only can be used at interface VLAN mode. The conversion

of unit: 1g=1,000m=1,000,000k=1,000,000,000bit.

 Example: Configure the bandwidth for vlan1 is 50,000,000bit.

 Switch(Config-if-Vlan1)#bandwidth 50m

1.1.2 description

 Command: description <text>

 no description

 Function: Configure the description information of VLAN interface. The no command

will cancel the description information of VLAN interface.

 Parameter: <text> is the description information of VLAN interface, the length should

not exceed 256 characters.

 Default: Do not configure.

 Command Mode: VLAN interface mode

 Usage Guide: The description information of VLAN interface behind description and

shown under the configured VLAN.

 Example: Configure the description information of VLAN interface as test vlan.

 Switch(config)#interface vlan 2

 Switch(config-if-vlan2)#description test vlan

1.1.3 interface loopback

 Command: interface loopback <loopback-id>

 no interface loopback <loopback-id>